Company lists · Data refreshed September 2026

Top 25 Donor engagement marketing agencies based in the United States

Name: Donor engagement marketing agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 1,366 companies tracked

RevenueBase identified 1,366 donor engagement marketing agencies headquartered in the United States as of September 2026 and tracks 12,355 professional contacts across them, including 5,159 with verified work emails. New York is the largest hub.

This list covers donor engagement marketing agencies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

1,366Companies

12,355Contacts tracked

5,159Verified emails

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The 25 largest donor engagement marketing agencies based in the United States

Ranked by team size

Top 25 of 1,366 donor engagement marketing agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to donor engagement marketing agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Lucas Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 2026	10001+	756 contacts →
	Partial evidence “Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Source: RevenueBase Database · checked Sep 28, 2026
2	CCS Fundraising	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	728 contacts →
	Indirect evidence “For over 75 years, CCS Fundraising has empowered many of the world’s greatest organizations to advance some of the most important causes in history.” Source: RevenueBase Database · checked Sep 28, 2026
3	RKD Group	Indirect evidence	Plano, TX, United StatesHQ checked Sep 28, 2026	201-500	492 contacts →
	Indirect evidence “RKD Group is the trusted growth architect for nonprofits.” Source: RevenueBase Database · checked Sep 28, 2026
4	Ministry Brands	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 28, 2026	501-1,000	461 contacts →
	Indirect evidence “We help more than purpose-driven organizations grow and amplify their impact on the world by providing transformative technology and services that enable organizations to grow…” Source: RevenueBase Database · checked Sep 28, 2026
5	Innovairre	Indirect evidence	Cherry Hill, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	342 contacts →
	Indirect evidence “Our motto says it all: We Help People Who Help People.” Source: RevenueBase Database · checked Sep 28, 2026
6	Reingold, INC	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 28, 2026	201-500	282 contacts →
	Partial evidence “Reingold is a full-service strategic communications and marketing firm, helping clients tell stories that get results.” Source: RevenueBase Database · checked Sep 28, 2026
7	Truesense Marketing	Partial evidence	Warrendale, PA, United StatesHQ checked Sep 28, 2026	201-500	280 contacts →
	Partial evidence “TrueSense Marketing is a full-service, strategic, direct response fundraising agency and direct mail marketing company.” Source: RevenueBase Database · checked Sep 28, 2026
8	BOOM	Partial evidence	Chagrin Falls, United StatesHQ checked Sep 28, 2026	n/a	195 contacts →
	Partial evidence “At Boom, we develop cross-media strategic marketing and public relations for our clients that convince their target audience to solicit their business, attend their event or…” Source: RevenueBase Database · checked Sep 28, 2026
9	Virtuous	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	51-200	191 contacts →
	Indirect evidence “Our mission is to move the needle on global generosity by helping nonprofits better connect with and inspire their supporters.” Source: RevenueBase Database · checked Sep 28, 2026
10	Masterworks	Partial evidence	Poulsbo, WA, United StatesHQ checked Sep 28, 2026	51-200	170 contacts →
	Partial evidence “Masterworks is a marketing and fundraising agency that helps Christian organizations of all shapes and sizes fully accomplish their missions in the world by providing a complete…” Source: RevenueBase Database · checked Sep 28, 2026
11	Summit Marketing	Partial evidence	Lenexa, KS, United StatesHQ checked Sep 28, 2026	51-200	158 contacts →
	Partial evidence “Summit Marketing is an integrated marketing communications firm with a track record of success in fundraising for nonprofit organizations and in sales and channel development for…” Source: RevenueBase Database · checked Sep 28, 2026
12	AGP Allegiance Group & Pursuant	Strong evidence	Fargo, ND, United StatesHQ checked Sep 28, 2026	51-200	137 contacts →
	Strong evidence “AGP partners with mission-driven organizations nationwide to strengthen donor engagement and support long-term, sustainable performance.” Source: RevenueBase Database · checked Sep 28, 2026
13	ARGUS	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	11-50	133 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
14	MAL Warwick Donordigital	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 28, 2026	51-200	112 contacts →
	Strong evidence “Our team of expert consultants develops innovative direct marketing-driven donor development programs for exceptional nonprofit causes like yours.” Source: RevenueBase Database · checked Sep 28, 2026
15	The Stelter Company	Partial evidence	West Des Moines, IA, United StatesHQ checked Sep 28, 2026	51-200	109 contacts →
	Partial evidence “In business since 1962, The Stelter Company is an integrated marketing agency that provides nonprofits with the insights and strategies needed to optimize revenue across the…” Source: RevenueBase Database · checked Sep 28, 2026
16	Zuri Group	Indirect evidence	Bend, OR, United StatesHQ checked Sep 28, 2026	51-200	106 contacts →
	Indirect evidence “Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Source: RevenueBase Database · checked Sep 28, 2026
17	BDI	Partial evidence	Monrovia, CA, United StatesHQ checked Sep 28, 2026	51-200	95 contacts →
	Partial evidence “OUR AGENCY: BDI is a full-service, omni-channel, marketing and fundraising agency for nonprofits.” Source: RevenueBase Database · checked Sep 28, 2026
18	UP Fundraising	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	90 contacts →
	Partial evidence “Up Fundraising is an Experiential Fundraising, Marketing and Brand Building company.” Source: RevenueBase Database · checked Sep 28, 2026
19	Marketeam	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	51-200	83 contacts →
	Indirect evidence “At MarkeTeam, we’ve spent the past 30 years doing good work that does good.” Source: RevenueBase Database · checked Sep 28, 2026
20	Phoenix Innovate	Partial evidence	Troy, MI, United StatesHQ checked Sep 28, 2026	51-200	80 contacts →
	Partial evidence “For organizations of all sizes and types, Phoenix Innovate is a marketing innovator that can be counted on to use its passion, vision and creativity to identify and solve business…” Source: RevenueBase Database · checked Sep 28, 2026
21	Marts&lundy	Indirect evidence	Lyndhurst, NJ, United StatesHQ checked Sep 28, 2026	51-200	79 contacts →
	Indirect evidence “Marts & Lundy serves as a trusted partner to mission-driven organizations whose bold aspirations are realized through the power of philanthropy.” Source: RevenueBase Database · checked Sep 28, 2026
22	Avalon Consulting Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	74 contacts →
	Partial evidence “Avalon is a full-service fundraising consulting agency helping nonprofits realize the full potential of their direct marketing programs through multi-channel fundraising…” Source: RevenueBase Database · checked Sep 28, 2026
23	Media Cause	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	70 contacts →
	Partial evidence “Media Cause is a mission-driven marketing and creative agency that helps nonprofits grow and accelerate their impact.” Source: RevenueBase Database · checked Sep 28, 2026
24	C K	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	66 contacts →
	Partial evidence “C+K is a marketing and advertising company based out of 1640 Rhode Island Ave NW, Washington, District of Columbia, United States.” Source: RevenueBase Database · checked Sep 28, 2026
25	charidy.com	Indirect evidence	Brooklyn, United StatesHQ checked Sep 28, 2026	51-200	65 contacts →
	Indirect evidence “Powering Community-Driven Fundraising Worldwide Charidy empowers nonprofit organizations to mobilize their communities and unlock extraordinary generosity.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: donor engagement marketing agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names donor engagement marketing agencies.
Partial evidence: Its own public description names part of donor engagement marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name donor engagement marketing agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,366 donor engagement marketing agencies based in the United States

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Donor engagement marketing agencies based in the United States at a glance

As of Sep 28, 2026

41.8%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

5.0%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,016

11-50

279

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,366 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among donor engagement marketing agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “donor engagement marketing agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names donor engagement marketing agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among donor engagement marketing agencies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 5,159 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Donor engagement marketing agencies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names donor engagement marketing agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many donor engagement marketing agencies are there based in the United States?

RevenueBase identified 1,366 donor engagement marketing agencies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Lucas Group, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most donor engagement marketing agencies?

New York leads with 68 headquartered companies, followed by Washington (53) and Chicago (32).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,159 verified decision-maker contacts tracked across these 1,366 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.